/**
 * Created by cc
 * Description:
 * User: CZH
 * Date: 2022-09-15
 * Time: 19:58
 */


public class HomeWork3 {
    public static void change(int[] arr){

    }
    //实现交换两个变量的值。要求：需要交换实参的值。
    public static void main(String[] args) {
        int a = 10;
        int b = 20;
        
    }
}
